Why: Project audit cannot use owner-wide logs or current conversation project state to establish trusted attribution.
Evidence: RED cases were observed locally; go test ./pkg/extension ./internal/store ./internal/app -count=1 passed on this tree (SELF).
Impact: Add optional X2 read and audit.read callback, immutable project/name snapshots, safe owner-only projection, and explicit unsupported coverage. Cross-member publication remains pending.
Refs: Stage 5 W9; Stage 6 X2 public extension request
weichen
c8dd169a1f